Switch construction.



H. C. STIFF.

SWITCH CONSTRUCTION.

APPLICATION FILED JAN. 3. 1919 Patented Apr. 8, 1919.

INVENTOR eTnTn' earn @FFEQE HENRY C. STTFF, Q13 JOHNSTOWH, PENNSYLVANIA.

. SWITCH ooNsTfaUoTIon.

nseaeoe.

To all whom, it may concern I Be it known that I, HENRY C. STIFF, acitizen of the United States, and resident of Johnstown, in the countyof Cambria and State of Pennsylvania, have invented certain new anduseful Improvements 'lng Switch Constructions, of which the follow ingis a specification.

My invention relates to the construction of tongue switches and isdesigned to pro: vide a T-rail tongue switch of simple and durableconstruction having improved means whereby the swinging switch tongue isfastened in place in the switch structure.

One object'of the invention is the provision of a switch means wherebythe switch tongue is secured in place within the pocket of the body orbed of the switch and tilting 0r lifting movement of the tongue in thepocket is avoided and overcome without interference with the sidewise.swinging movements of the switch tongue.

arrangement and combination of parts, all

With this and other objects in View, the invention consists in the novelconstruction,

substantially as hereinafter described, and pointed out in the appendedence being had to the accompanying drawings forming part of thisspecification, in

i which-- Figure 1 is a plan showing a tongue switch of the T-rail typeembodying the novel features of my invention.

Figs. 2 and 3 are transverse sections on the lines ITH and III-Ill,respectively, of Fig. 1.

Fig. 4 is a sectional side elevation showing details in the constructionof the switch tongue fastening forming part of the switches embodying myinvention.

Fig. 5 is a horizontal section on the line V-V of Fig. 4 showing detailsin the construction of the switch tongue.-

Fig. 6 is a plan and Fig. 7 an end elevation of the cover or lid for thebox at the side of the switch structure.

In the accompanying drawings the numeral 2 designates the body or bed ofthe switch structure having a shallow depression or recess in its upperhorizontal face forming.a pocket 3 in which the sidewise swinging tongue4 of the switch is operativ ely positioned.

The side surfaces of the body 2 are made Specification of LettersPatent. I

structure having noyel p tegral boss 12 on claims, refer-.

in advance of the vertical axis of the Patented Apr. 8;. rate.Application filed January 3, 1919. Serial No. 269,453.

under surface of the head, sloping uppers surface of the bottom flangeand the web of the T-rails 5 and 6 forming part of the switch structure.The rails 5 and 6 are,

bent so as to-bulge outwardly at'a point ad tothepoint of the switchtongue to f I provide space for the manganese steel in-', I

- sert and '65 The rear.

end or heel 10 of the switch tongue has an M integral projection or pin11' on its lower face which projects downwardly into an;

axially vertical hole in the bottom of the.

ocket 3, this hole extending through the inthe lower side of the bed 2so as to form a bearing for the pin L1, as is best shown in Fig. a.

The bed 2 also is provided with a'hole 13 which extends from the uppersurface of the bottom of the pocket 3 to the lower face of the switchbody, this hole 13 being somewhat larger than the integrally formed lugor ear 14 on the lower surface of the switch into. The lug it has atransverse opening tongue 4 which extends downwardly there- 15 thereinof peculiar constructiointhis hole being cylindrical in outline at themiddle of its length in both a vertical and a hori zontal plane and Voutline at the side surfaces of the lug-1a in a horizontal plane. .(SeeFigs. 1, 4-, and h). The switch bed 2 has holes 16, 16 therebeingelliptical or oval in in which register with the flaring (ngening,1:15in the lug 14E of the switch tongue, and

extending through the openings 15 and l6 is a cylindrical bolt or pin l7by which the switch tongue is fastened in place within the pocket 3 ofthe switch body. .It will be seen by reference to Fig. 1 that the pin 17is located on the tongue at a short distance heel 10 of the tongue 4, sothat the tongue, which, in the operation of the switch, swings from sideto side of the pocket 3, is securely held in placeiand is prevented fromlifting bodily or tilting within the pocket 3. The peculiars shape ofthe opening 15 in the lug 14: provides the clearance required to permitof the necessary sidewise swinging movement of the switch tongue whenthe switch is in use without the occurrence of binding between thesurfaces of the opening 15 and bolt or pin 17.

Secured on the side of the switch by means vof the bolts 9, 9, is a box18 having an open upper side, this box having a removable cover 19, andon the lower face of the cover 19 is a projection or lug 20 whichextends downwardly within the'box and engages the end, or head of thebolt or pin 17 so as to prevent lengthwise movement thereof in the holes15, 16. A hole 21 in the side of the box 18 (see Fig. 2) enables the pin17 to be put into place and to be removed, the cover 19 first beingremoved to enable the pin to be put into and removed from its operativeposition "without interference by the lug 20 on the lid or cover 19,

The advantages of my invention, which will be appreciated by thoseskilled in the 'art, arise from the novel means employed in fasteningthe swinging switch tongue in operative position within the pocket ofthe switch body.

Many modifications may vbe made in the details of the switch structurewithout departing from my invention as defined in I the appended claims.

I claim 1 1. In a tongue switch, the combination with the switch body,of a swinging tongue said tongue having a lug on the under side thereof,and a pin extending through registering openings in said lug and switchbody, said pin. being located. intermediate the heel and point of theswitch tongue, and the ends of if the opening in said lug being flaredto pre 36.

vent lifting movement of the tongue relative to the swltch body withoutinterference w-ithsidewise swinging movements of the tongue i r v 6 1'2.In a tongue switch, the combination .with the switch body of a swingingtongue pivotally mounted on said body, said tongue having a lug on theunder side thereof, and a, pin extending'through registering open- .iggsin said and switch body, said pin it-l q a intermediate the, heel and myhand.

point of the switch tongue, and the ends of the opening in said lugbeing flared to prevent lifting movement of the tongue relative .to theswitch body without interfering with sidewise swinging movements of thetongue, and means adapted to engage said pin for preventing displacementthereof relative to the switch body.

v In a tongue switch, the combination with the switch body of a swingingtongue pivotally mounted on said body, said tongue having a lug on thelower face thereof, and a pin extending through registering openings insaid lug and switch body, said pin being located intermediate the heeland point of the switch tongue, and the ends of the opening in said lugbeing flared to prevent lifting movement of the tongue relativepivotally mounted on said body, said tongue having a lug on the lowerface thereof, and a pin extending through registering openings in saidlug and switch body, said pin being located intermediate the heel andpoint of the switch tongue, and the ends of the opening in said lugbeing flared to prevent lifting movement of the tongue relative 'to thebodywithout. interfering with side:

wise swinging movements of the tongue, a

box on the side of the switch into which said pin extends, and aremovable cover on said box, said cover having a projection adapted toengage with the end of the pin and prevent dis lacement thereof when thecover is on saidox. 1 i

In testimony whereof I have hereunto set HENRY c. s'rimr.

